Potential can be countable noun, in physics (and electrical work, for the same reason). In the sense of “potential for error”, it is generally uncountable. You are correct. What would most standard to say, “The Potential for Error” or just “potential for error”

However, you will get indefinite articles before potential when it is an adjective – one might talk about something as ” a potential error”.

Is there any possibility that your speaker slipped while seated? Is this sort of slip common enough that it might even be considered as a variant in

itself. I just used one to make a slip.

Merriam-Webster allows ‘potential’ to be a countable noun:

potential noun

1a : something that can develop or become actual

a potential for violence

So

we can talk about the embodiment of an ordinarily non-count attribute in a person or thing – She had a singular grace and wonderful lightness when playing the piano; he had a weight and a stature as a politician that were useful to his party.

A potential for error” is an odd expression, as it suggests there is more than one kind of potential for error. What makes sense to me, who is making a complete philosophical statement? Why does this video goes into more detail about the variation of potential errors? I would instead say: In

any human endeavor there is the potential for various kinds of error retaining

“potential” as an uncountable noun.

What are the reasons you think it’s strange. I’m not going to say that the speaker in the video cheated by editing another segment, or is not a native English speaker, but may be unfamiliar with the typical way this idea is expressed.

Can a noncountable noun be also a countable noun, for example?

I like to enjoy a music in the evenings, he said. “I like to enjoy a music in the evenings,” he said. Why play more than one music when I’m feeling indulgent” It’s

not impossible to be creative, but creative writing is. If your writing is nonsense, or for an inaccuracies reader, you just have to be aware.